A Iv-I cadence is called

Answer 1

A iv-I cadence is called a "plagal cadence." In the context of Western music theory, a plagal cadence typically involves the chords built on the subdominant (iv in minor, or IV in major) resolving to the tonic (I). It often has a softer, more reflective quality compared to the stronger authentic cadence (V-I). In minor keys, a common example would be moving from an A minor (iv) chord to a D major (I) chord.